TS6

iTrader: (41)

Sounds like I'll be keeping my trusty little D1SC. Wish I had more blower whine. Not to sound like a ricer but damn those F1X units sound wicked. If I put a bigger inlet on mine will it be louder?

EPP

iTrader: (22)

I haven't heard of any real tricks that work on our LS1 F Body cars with an ATI ProCharger, other than the proven SDCE bracket, which is why I don't recommend a blower larger than an F1A. Bob

98transguy

iTrader: (7)

Hey Bob have u tried the ATI 12 rib on any ls1 procharger setups?

ty_ty13

iTrader: (42)

not enough room....

ty_ty13

iTrader: (42)

if i end up putting motor plates on my car i'll have a f1r on there with a 12 rib for sure

kp

iTrader: (34)

If you like the noise and you want to move more aiir the F1A will definately work for you. Even with the 4.25 pulley it made 1-2 more psi then the D1SC maxed out and your motor needs all the air it can get. Most likely you wont notice any slip with spinning it max (~ a 3.7 pulley)with what you are doing and you definately wont see it on the dyno unless you dyno in 1st gear. like I said my car accelerates a little quicker then most in 1st gear plus the BS3 logs about 1000 frames of data in 1st gear so I can see it.

You will have to do some trimming on the lower core support and move the bottom of the radiator forward, it is not a direct bolt on. If I had a 408 I would do it, if you have meth the slightly higher IATs shouldnt be an issue. If you have the D1 maxed out you have little choice really.

TS6

iTrader: (41)

I haven't come close to maxing my D1, I'm only on a 3.85 pulley.

Fitting the F1A isn't a problem, but I really don't want to have high IAT issues or belt slip issues just for another 50 or so HP.

I don't know if I give the impression that this is a dyno queen, but once I get the rear end to handle it I plan to let this thing leave hard. Other than the initial tune, I really don't dyno the car.

kp

iTrader: (34)

"My current setup dyno'd 730 RWHP, 13-14 psi. I'd really like to claim 1000 crank horsepower, its always been a goal of mine."

Dont know where I got that impression, but you know sometimes people read more into what they read

If you are on 7.25 (SDCE) crank pulley you are nowhere maxing out the D1 anyways. Even with the ATI 8-rib 7.65 you are nowhere near max at 7000rpm even so yo have a ways to go.

EPP

iTrader: (22)

No we haven't, there isn't any room for a wider belt unless you do some serious modifications. Bob

eb02z06

iTrader: (18)

With my methanol setup the F1R and the D1SC have the same IAT's on the street. For example if at the begining of the pull the temp is 95 degrees at the top of the pull the temps drop to around 57-65 degrees. I think maybe the F1A has the higher temps is due the fact it's using the same volute size as a D1SC(9"). The F1R and C go to a 9.75" volute and from what I understand the F1C runs a bit cooler than the R. FWIW I have the D1SC on my car at the current moment-it's sweet blower with tonnes of midrange-BUT-I miss my F1R-it's loud and obnoxious and it's hit is violent!!!!!I'm dying to get it back!!!!

ty_ty13

iTrader: (42)

what about these gto brackets... i think they face the blower the right way to fit a 12rib on it and i think they also dont ride on the accesory (could be wrong about that though)? i was looking into that a while ago because of the iron block not having the 3 holes to tap.... you could bolt it to the head and move your fuses and stuff and have a big blower there.. :shrug:

kp

iTrader: (34)

Bigger blowers make more heat generally. Since the F1A and F1C spin higher then the F1/F1R they may be a little hotter. I'm more concerned with the belt then the heat, the heat is easy to deal with using meth or a better IC. When it cools off out I'll spend more time with the F1A and a fresh belt, I just cant catch a weather break with the F1A on the car but thats how it goes sometimes. I would just leave it on with the 4.25 pulley but the noise gets to me, most like the noise though

ty_ty13

iTrader: (42)

are you saying that with the sdce and the 4.25 you dont have belt problems... but with the 4.00 you do?

eb02z06

iTrader: (18)

I miss that noise, the D1SC is near silent compared to that F1R.

ty_ty13

iTrader: (42)

heres something to look at... https://ls1tech.com/forums/showthrea...3&page=5&pp=20

if your interrested in a larger blower..

kp

iTrader: (34)

Yes, but the belt problems arent realy that severe. It just slips a little on the way up in 1st gear only. Car still ran pretty well but I could see on the logs it was slipping a little. Also there wa quite a bit of belt dust, way more then I ever seen, when I took the F1A off after 8 passes.

I made 8 passes with the F1A and 4.25 and there no dust and no 1st gear slippage I could see. A fesh belt and a little more tension may work fine and like I said it may work fine for someone else, this belt has been on the car for quite a while too so maybe a fresh one will help. Either way I'm going to wait a while to try the F1A again, there is no doubt the F1A makes more power then the D1.

Next up is the maxed out D1SC with this cam to see where I'm at with it compared to the F1A woith the 4.25.

ty_ty13

iTrader: (42)

cool.... making more power is always good... but i just dont like to inherit more problems..... but thats usually what happens...

i'll be tempted to put a larger unit on mine maybe next summer... i plan to swap the heads out first and get atleast another 1/2 point compression... this d1 has much more potential then people give it credit for.... if my heads werent backing up i'd be able to get another 75+ hp out of the little d1.... im not close to pushing it very hard.... by running a 3.4 and a 7.65 @ 6300rpms...

i'm also thinking about a A2W setup when i do a head/cam swap...

ty_ty13

iTrader: (42)

what EGT's are you running with that F1A on there?

kp

iTrader: (34)

I havent checked the EGTs in a while, I'm running the car very safe beacuse I dont want to be putting head gaskets on it every two weeks.

The D1 is a great unit, and no doubt the F1A puts out more, and the F1C, puts out more then that, and the F2 and so on. But for what I'm doing if I can run the D1 and run 9.1x-9.2x with less IAT and less horsepower to drive it why not.

Now on the other hand if TS6 likes the noisier blower then why not go to the F1A, since he hasnt maxed the D1 out running the F1A slower will guarantee no slip, the noise he wants and not much IAT difference then going higher with the D1.

Cyborg

iTrader: (8)

Do you guys remember hearing about a "direct drive" setup the replaces the pulleys and belt (I'm guessing with gears) on LSX Procharger setups that was at the PRI show 2 years ago? I can't remember the name of the company that was showing it, and I never heard a thing about it after that...